Since we were born there is a life path that we are supposed to end up. This is what we call destiny. This is the plan from God given to us. God’s plan, since it belongs to God, is holy, wise, and benevolent. The providence of God is working to bring about His original plan for creation.
Often, when the Bible speaks of destiny, it’s in reference to a destiny people have brought upon themselves: “Many live as enemies of the cross of Christ. Their destiny is destruction” (Philippians 3:18-19). “This is the fate of those who trust in themselves” (Psalm 49:13). “A man who commits adultery lacks judgment; / whoever does so destroys himself” (Proverbs 6:32). “Each person was judged according to what he had done” (Revelation 20:13).
We sin because we choose to. We can’t blame “Fate,” kismet, predestination, or God. James 1:13-14 says, “When tempted, no one should say, ‘God is tempting me.’ For God cannot be tempted by evil, nor does he tempt anyone; but each one is tempted when, by his own evil desire, he is dragged away and enticed.”
Interestingly, many people who choose to sin are annoyed by the negative consequences of their sin. “A man's own folly ruins his life, / yet his heart rages against the LORD” (Proverbs 19:3). This is a very insightful verse. When a man foolishly wrecks his life, he may yet insist on blaming God, or perhaps “Fate.” In this way, he persists in his folly.
Fighting against the plan of God is pointless. “There is no wisdom, no insight, no plan / that can succeed against the LORD” (Proverbs 21:30). This is why the Tower of Babel was never completed (Genesis 11:1-9), why Daniel’s detractors were thrown to the lions (Daniel 6:24), why Jonah spent time inside a fish (Jonah 1:17), and why I get in trouble when I sin.
There is another thing i want to share, No one can change your destiny for you. You are the key and it's a freewill to follow God's plan, if you deviate His plan ask Forgiveness and repent.
Nowadays, I can see and feel clearly someone else destiny. As light worker we are oblige to assist them back in the track according to God's plan. Its better to silence and give support rather than to say "your life will end up in ruin" for it will be quickly materialized.
There is saying,
“Watch your thoughts, for they become words.
Watch your words, for they become actions.
Watch your actions, for they become habits.
Watch your habits, for they become character.
Watch your character, for it becomes your destiny.”
It's all in our decision to end up in thrash or in heaven.